URL Blocker is a free Chrome add-on developed by Jeremy Deschamps. It falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. This application allows users to block URLs opened in new tabs based on a user-defined blacklist.

URL Blocker is a straightforward tool that aims to enhance user productivity and focus by preventing access to specific websites. The user can manually create a blacklist of URLs that they want to block. This ensures that when any of the blacklisted URLs are opened in a new tab, they are immediately closed.

One of the key advantages of URL Blocker is its simplicity. Users can easily manage their blacklist without the need for complicated configurations or importing data from external sources. Additionally, URL Blocker does not collect or share any user data for marketing purposes, ensuring privacy and security.

Overall, URL Blocker is a useful tool for individuals who want to limit their access to certain websites and improve their productivity. With its intuitive interface and efficient blocking mechanism, it provides a hassle-free experience for users seeking to maintain focus while browsing.